[interpeter] prompt does not appear after output of error or warning of external program

[Tatsuro MATSUOKA]

Hello

I do know judge whether what I want to point out is intentional. 

Octave uses external program (gnuplot) via pipe.
Gnuplot or its external libraries sometimes send call back messages
(error messages or warning.)

For example,


>> graphics_toolkit gnuplot
>> setenv GNUTERM wxt
>> plot (rand(5))
>>
(gnuplot.exe:6116): Pango-WARNING **: couldn't load font "Helvetica Not-Rotated 
2
00", falling back to "Sans Not-Rotated 200", expect ugly output.


After output the message, the octave command prompt does not appear.
If I press ENTER, the command prompt appear.

On gnuplot
 
gnuplot> set term wxt font 'Helvetica'
Terminal type set to 'wxt'
Options are '0 enhanced font "Helvetica"'
gnuplot> plot x

(gnuplot.exe:5072): Pango-WARNING **: couldn't load font "Helvetica Not-Rotated 
200", falling back to "Sans Not-Rotated 200", expect ugly output.
gnuplot>

After warning from pango, gnuplot command prompt "gnuplot>" appear immediately.

Is the octave behaviors for output from gnuplot intentional?

Tatsuro